Hi I am new to this community. Got started thanks to the excellent XPP course @ SDL University. (not to promote or anything)
I have tried printing in Korean and was wondering if anyone has experience in publishing other languages.
Just like Chris said, using XPP to print different languages is in the first place a question of loading the proper fonts that will support the languages you want to produce.
But don't forget that if you need to set running text in a language, then you will also need to license the proper hyphenation and dictionary for that language.